The average cluster-summarised UNIT and MABC scores among children who repeated a grade (n=76), and those who never repeated a grade (n=272)
| Vitamin A | Placebo | Effect estimate* | 95% CI | p Value | |
|---|---|---|---|---|---|
| Repeaters | |||||
| Number of clusters | 5 | 6 | |||
| Number of participants | 32 | 44 | |||
| √(MABC+1) mean of cluster means | 2.58 | 2.73 | −0.15 | (−0.60 to 0.31) | 0.49 |
| UNIT mean of cluster means | 77.43 | 81.09 | −3.65 | (−14.07 to 6.77) | 0.45 |
| Non-repeaters | |||||
| Number of clusters | 6 | 6 | |||
| Number of participants | 159 | 113 | |||
| √(MABC+1) mean of cluster means† | 2.59 | 2.23 | 0.36 | (0.05 to 0.67) | 0.03 |
| UNIT mean of cluster means | 85.33 | 82.85 | −2.48 | (−14.19, 9.23) | 0.64 |
| Never attended school | |||||
| Number of clusters | 6 | 4 | |||
| Number of participants | 18 | 17 | |||
| √(MABC+1) mean of cluster means‡ | 3.27 | 3.52 | −0.25 | (−0.99 to 0.50) | 0.47 |
| UNIT mean of cluster means | 41.72 | 40.72 | 1.00 | (−24.25 to 26.25) | 0.93 |
*The effect estimate is the difference in scores or adjusted residuals comparing vitamin A with placebo.
†N=1 MABC score missing due to injury from the placebo group.
‡N=1 MABC score missing due to injury from the placebo group.
MABC, Movement Assessment Battery for Children; UNIT, Universal Nonverbal Intelligence Test.